Hands-on Classroom Photolithography Laboratory Module To Explore Nanotechnology

Stelick, Scott; Alger, William H.; Laufer, Jesse S.; Waldron, Anna M.; Batt, Carl A.

doi:10.1021/ed082p1361

Cited by 4 publications

(4 citation statements)

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“…Because UV radiation is being used to change the solubility of a chemical, PμSL could be considered a form of maskless photolithography that is capable of producing true 3D objects . In this case, the mask is replaced by a black background from the projector.…”

Section: Chemical Considerationsmentioning

confidence: 99%

Three-Dimensional Printing Using a Photoinitiated Polymer

Muskin

Ragusa

Gelsthorpe³

2010

J. Chem. Educ.

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Printers capable of producing three-dimensional objects are becoming more common. Most of these printers are impractical for use in the chemistry classroom because of the expense incurred in fabricating a print head that must be controlled in three dimensions. We propose a simpler solution to this problem that allows the emerging technology of three-dimensional printing to be examined and executed in a typical classroom. By replacing the print head with a data projector that can develop two-dimensional layers of the objects simultaneously rather than sequentially, the need for expensive equipment is eliminated. A simple, cost-effective mechanical staging device can be constructed that allows for control of the third dimension of the object. Students can learn about this emerging technology and also about some of the polymer science behind it, connecting chemistry to a variety of disciplines, including engineering and art.

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Section: Chemical Considerationsmentioning

confidence: 99%

Three-Dimensional Printing Using a Photoinitiated Polymer

Muskin

Ragusa

Gelsthorpe³

2010

J. Chem. Educ.

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“…They further state that laboratory exercises demonstrating nanofabrication techniques have not been developed extensively due to the expense and expertise necessary to implement these laboratories . There are some undergraduate-level nanofabrication laboratory exercises involving photolithography; , however, the issue of cost resurfaces because expensive materials are needed for the photolithography experiments. Another report mentions the need for an additional piece of specialty equipment, such as an optical reducer, for college-level photolithography laboratory exercises .…”

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confidence: 99%

Atomic Force Microscopy Analysis of Nanocrystalline Patterns Fabricated Using Micromolding in Capillaries

et al. 2012

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A cost-effective, hands-on laboratory exercise is described for demonstrating nanoscale fabrication at non-research-based educational institutions. The laboratory exercise also contains a component involving qualitative and quantitative surface characterization of student-fabricated nanoscale structures at institutions with on-site access to an atomic force microscope or access via another facility. The applicability of this laboratory exercise was demonstrated in a nanotechnology instrumentation course.

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“…Traditionally, soft lithographic patterning is performed on conductive gold films prepared by electron beam evaporation (8,10) or by thermal evaporation (11) using potassium cyanide (KCN) as the etchant on gold films, which is a regulated material deemed too hazardous for undergraduate experimentation. Papers published in this Journal include photolithography utilizing UV light sources (12)(13)(14)(15)(16) and soft lithography on a gold archival CD that uses a commercial, cyanide-free gold etchant (17).…”

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confidence: 99%

Selective Etching via Soft Lithography of Conductive Multilayered Gold Films with Analysis of Electrolyte Solutions

Gerber

Oliver-Hoyo

2008

J. Chem. Educ.

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This experiment is designed to expose undergraduate students to the process of selective etching by using soft lithography and the resulting electrical properties of multilayered films fabricated via self-assembly of gold nanoparticles. Students fabricate a conductive film of gold on glass, apply a patterned resist using a polydimethylsiloxane stamp, and etch the unprotected gold. The resulting pattern is evaluated for changes in current, voltage flow, and resistance relative to the initial properties of the nonetched films. Students determine how changes in resistance applied to a conductive pattern affect the flow of current and voltage. Comparisons are made among different electrolyte solutions to demonstrate the electrical difference between strong, weak, and nonelectrolyte solutions, and how stronger electrolytes provide for better current flow.

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Hands-on Classroom Photolithography Laboratory Module To Explore Nanotechnology

Cited by 4 publications

References 0 publications

Three-Dimensional Printing Using a Photoinitiated Polymer

Three-Dimensional Printing Using a Photoinitiated Polymer

Atomic Force Microscopy Analysis of Nanocrystalline Patterns Fabricated Using Micromolding in Capillaries

Selective Etching via Soft Lithography of Conductive Multilayered Gold Films with Analysis of Electrolyte Solutions

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